4 vying to lead Japan's largest opposition party

Four lawmakers of the Constitutional Democratic Party have filed their candidacies in a race to pick the new leader of Japan's largest opposition party.

The four are Ohsaka Seiji, a former special advisor to the prime minister, Ogawa Junya, CDP Diet affairs committee deputy chairperson, Izumi Kenta, CDP policy research council chairperson, and Nishimura Chinami, a former state minister for health, labor and welfare.

The party accepted the resignation of Edano Yukio as its leader after suffering a setback in the Lower House election last month.

Official campaigning kicked off on Friday. Voting and vote-counting are scheduled for November 30, when the CDP will hold an extraordinary party convention.

Representatives of the four candidates submitted papers in the morning along with the lists of at least 20 lawmakers who back their candidacies.

Debates are expected to center on how to rebuild the party after its setback and its relations with other opposition parties.